Let's roll up our sleeves and solve this. We have 814 and we're going to multiply it by 388, essentially adding 814 to itself 388 times.
Step 1: 0 + 814 = 814
Step 2: 814 + 814 = 1628
Step 3: 1628 + 814 = 2442
Step 4: 2442 + 814 = 3256
Step 5: 3256 + 814 = 4070
Step 6: 4070 + 814 = 4884
Step 7: 4884 + 814 = 5698
Step 8: 5698 + 814 = 6512
Step 9: 6512 + 814 = 7326
Step 10: 7326 + 814 = 8140
Step 11: 8140 + 814 = 8954
Step 12: 8954 + 814 = 9768
Step 13: 9768 + 814 = 10582
Step 14: 10582 + 814 = 11396
Step 15: 11396 + 814 = 12210
Step 16: 12210 + 814 = 13024
Step 17: 13024 + 814 = 13838
Step 18: 13838 + 814 = 14652
Step 19: 14652 + 814 = 15466
Step 20: 15466 + 814 = 16280
Step 21: 16280 + 814 = 17094
Step 22: 17094 + 814 = 17908
Step 23: 17908 + 814 = 18722
Step 24: 18722 + 814 = 19536
Step 25: 19536 + 814 = 20350
Step 26: 20350 + 814 = 21164
Step 27: 21164 + 814 = 21978
Step 28: 21978 + 814 = 22792
Step 29: 22792 + 814 = 23606
Step 30: 23606 + 814 = 24420
Step 31: 24420 + 814 = 25234
Step 32: 25234 + 814 = 26048
Step 33: 26048 + 814 = 26862
Step 34: 26862 + 814 = 27676
Step 35: 27676 + 814 = 28490
Step 36: 28490 + 814 = 29304
Step 37: 29304 + 814 = 30118
Step 38: 30118 + 814 = 30932
Step 39: 30932 + 814 = 31746
Step 40: 31746 + 814 = 32560
Step 41: 32560 + 814 = 33374
Step 42: 33374 + 814 = 34188
Step 43: 34188 + 814 = 35002
Step 44: 35002 + 814 = 35816
Step 45: 35816 + 814 = 36630
Step 46: 36630 + 814 = 37444
Step 47: 37444 + 814 = 38258
Step 48: 38258 + 814 = 39072
Step 49: 39072 + 814 = 39886
Step 50: 39886 + 814 = 40700
Step 51: 40700 + 814 = 41514
Step 52: 41514 + 814 = 42328
Step 53: 42328 + 814 = 43142
Step 54: 43142 + 814 = 43956
Step 55: 43956 + 814 = 44770
Step 56: 44770 + 814 = 45584
Step 57: 45584 + 814 = 46398
Step 58: 46398 + 814 = 47212
Step 59: 47212 + 814 = 48026
Step 60: 48026 + 814 = 48840
Step 61: 48840 + 814 = 49654
Step 62: 49654 + 814 = 50468
Step 63: 50468 + 814 = 51282
Step 64: 51282 + 814 = 52096
Step 65: 52096 + 814 = 52910
Step 66: 52910 + 814 = 53724
Step 67: 53724 + 814 = 54538
Step 68: 54538 + 814 = 55352
Step 69: 55352 + 814 = 56166
Step 70: 56166 + 814 = 56980
Step 71: 56980 + 814 = 57794
Step 72: 57794 + 814 = 58608
Step 73: 58608 + 814 = 59422
Step 74: 59422 + 814 = 60236
Step 75: 60236 + 814 = 61050
Step 76: 61050 + 814 = 61864
Step 77: 61864 + 814 = 62678
Step 78: 62678 + 814 = 63492
Step 79: 63492 + 814 = 64306
Step 80: 64306 + 814 = 65120
Step 81: 65120 + 814 = 65934
Step 82: 65934 + 814 = 66748
Step 83: 66748 + 814 = 67562
Step 84: 67562 + 814 = 68376
Step 85: 68376 + 814 = 69190
Step 86: 69190 + 814 = 70004
Step 87: 70004 + 814 = 70818
Step 88: 70818 + 814 = 71632
Step 89: 71632 + 814 = 72446
Step 90: 72446 + 814 = 73260
Step 91: 73260 + 814 = 74074
Step 92: 74074 + 814 = 74888
Step 93: 74888 + 814 = 75702
Step 94: 75702 + 814 = 76516
Step 95: 76516 + 814 = 77330
Step 96: 77330 + 814 = 78144
Step 97: 78144 + 814 = 78958
Step 98: 78958 + 814 = 79772
Step 99: 79772 + 814 = 80586
Step 100: 80586 + 814 = 81400
Step 101: 81400 + 814 = 82214
Step 102: 82214 + 814 = 83028
Step 103: 83028 + 814 = 83842
Step 104: 83842 + 814 = 84656
Step 105: 84656 + 814 = 85470
Step 106: 85470 + 814 = 86284
Step 107: 86284 + 814 = 87098
Step 108: 87098 + 814 = 87912
Step 109: 87912 + 814 = 88726
Step 110: 88726 + 814 = 89540
Step 111: 89540 + 814 = 90354
Step 112: 90354 + 814 = 91168
Step 113: 91168 + 814 = 91982
Step 114: 91982 + 814 = 92796
Step 115: 92796 + 814 = 93610
Step 116: 93610 + 814 = 94424
Step 117: 94424 + 814 = 95238
Step 118: 95238 + 814 = 96052
Step 119: 96052 + 814 = 96866
Step 120: 96866 + 814 = 97680
Step 121: 97680 + 814 = 98494
Step 122: 98494 + 814 = 99308
Step 123: 99308 + 814 = 100122
Step 124: 100122 + 814 = 100936
Step 125: 100936 + 814 = 101750
Step 126: 101750 + 814 = 102564
Step 127: 102564 + 814 = 103378
Step 128: 103378 + 814 = 104192
Step 129: 104192 + 814 = 105006
Step 130: 105006 + 814 = 105820
Step 131: 105820 + 814 = 106634
Step 132: 106634 + 814 = 107448
Step 133: 107448 + 814 = 108262
Step 134: 108262 + 814 = 109076
Step 135: 109076 + 814 = 109890
Step 136: 109890 + 814 = 110704
Step 137: 110704 + 814 = 111518
Step 138: 111518 + 814 = 112332
Step 139: 112332 + 814 = 113146
Step 140: 113146 + 814 = 113960
Step 141: 113960 + 814 = 114774
Step 142: 114774 + 814 = 115588
Step 143: 115588 + 814 = 116402
Step 144: 116402 + 814 = 117216
Step 145: 117216 + 814 = 118030
Step 146: 118030 + 814 = 118844
Step 147: 118844 + 814 = 119658
Step 148: 119658 + 814 = 120472
Step 149: 120472 + 814 = 121286
Step 150: 121286 + 814 = 122100
Step 151: 122100 + 814 = 122914
Step 152: 122914 + 814 = 123728
Step 153: 123728 + 814 = 124542
Step 154: 124542 + 814 = 125356
Step 155: 125356 + 814 = 126170
Step 156: 126170 + 814 = 126984
Step 157: 126984 + 814 = 127798
Step 158: 127798 + 814 = 128612
Step 159: 128612 + 814 = 129426
Step 160: 129426 + 814 = 130240
Step 161: 130240 + 814 = 131054
Step 162: 131054 + 814 = 131868
Step 163: 131868 + 814 = 132682
Step 164: 132682 + 814 = 133496
Step 165: 133496 + 814 = 134310
Step 166: 134310 + 814 = 135124
Step 167: 135124 + 814 = 135938
Step 168: 135938 + 814 = 136752
Step 169: 136752 + 814 = 137566
Step 170: 137566 + 814 = 138380
Step 171: 138380 + 814 = 139194
Step 172: 139194 + 814 = 140008
Step 173: 140008 + 814 = 140822
Step 174: 140822 + 814 = 141636
Step 175: 141636 + 814 = 142450
Step 176: 142450 + 814 = 143264
Step 177: 143264 + 814 = 144078
Step 178: 144078 + 814 = 144892
Step 179: 144892 + 814 = 145706
Step 180: 145706 + 814 = 146520
Step 181: 146520 + 814 = 147334
Step 182: 147334 + 814 = 148148
Step 183: 148148 + 814 = 148962
Step 184: 148962 + 814 = 149776
Step 185: 149776 + 814 = 150590
Step 186: 150590 + 814 = 151404
Step 187: 151404 + 814 = 152218
Step 188: 152218 + 814 = 153032
Step 189: 153032 + 814 = 153846
Step 190: 153846 + 814 = 154660
Step 191: 154660 + 814 = 155474
Step 192: 155474 + 814 = 156288
Step 193: 156288 + 814 = 157102
Step 194: 157102 + 814 = 157916
Step 195: 157916 + 814 = 158730
Step 196: 158730 + 814 = 159544
Step 197: 159544 + 814 = 160358
Step 198: 160358 + 814 = 161172
Step 199: 161172 + 814 = 161986
Step 200: 161986 + 814 = 162800
Step 201: 162800 + 814 = 163614
Step 202: 163614 + 814 = 164428
Step 203: 164428 + 814 = 165242
Step 204: 165242 + 814 = 166056
Step 205: 166056 + 814 = 166870
Step 206: 166870 + 814 = 167684
Step 207: 167684 + 814 = 168498
Step 208: 168498 + 814 = 169312
Step 209: 169312 + 814 = 170126
Step 210: 170126 + 814 = 170940
Step 211: 170940 + 814 = 171754
Step 212: 171754 + 814 = 172568
Step 213: 172568 + 814 = 173382
Step 214: 173382 + 814 = 174196
Step 215: 174196 + 814 = 175010
Step 216: 175010 + 814 = 175824
Step 217: 175824 + 814 = 176638
Step 218: 176638 + 814 = 177452
Step 219: 177452 + 814 = 178266
Step 220: 178266 + 814 = 179080
Step 221: 179080 + 814 = 179894
Step 222: 179894 + 814 = 180708
Step 223: 180708 + 814 = 181522
Step 224: 181522 + 814 = 182336
Step 225: 182336 + 814 = 183150
Step 226: 183150 + 814 = 183964
Step 227: 183964 + 814 = 184778
Step 228: 184778 + 814 = 185592
Step 229: 185592 + 814 = 186406
Step 230: 186406 + 814 = 187220
Step 231: 187220 + 814 = 188034
Step 232: 188034 + 814 = 188848
Step 233: 188848 + 814 = 189662
Step 234: 189662 + 814 = 190476
Step 235: 190476 + 814 = 191290
Step 236: 191290 + 814 = 192104
Step 237: 192104 + 814 = 192918
Step 238: 192918 + 814 = 193732
Step 239: 193732 + 814 = 194546
Step 240: 194546 + 814 = 195360
Step 241: 195360 + 814 = 196174
Step 242: 196174 + 814 = 196988
Step 243: 196988 + 814 = 197802
Step 244: 197802 + 814 = 198616
Step 245: 198616 + 814 = 199430
Step 246: 199430 + 814 = 200244
Step 247: 200244 + 814 = 201058
Step 248: 201058 + 814 = 201872
Step 249: 201872 + 814 = 202686
Step 250: 202686 + 814 = 203500
Step 251: 203500 + 814 = 204314
Step 252: 204314 + 814 = 205128
Step 253: 205128 + 814 = 205942
Step 254: 205942 + 814 = 206756
Step 255: 206756 + 814 = 207570
Step 256: 207570 + 814 = 208384
Step 257: 208384 + 814 = 209198
Step 258: 209198 + 814 = 210012
Step 259: 210012 + 814 = 210826
Step 260: 210826 + 814 = 211640
Step 261: 211640 + 814 = 212454
Step 262: 212454 + 814 = 213268
Step 263: 213268 + 814 = 214082
Step 264: 214082 + 814 = 214896
Step 265: 214896 + 814 = 215710
Step 266: 215710 + 814 = 216524
Step 267: 216524 + 814 = 217338
Step 268: 217338 + 814 = 218152
Step 269: 218152 + 814 = 218966
Step 270: 218966 + 814 = 219780
Step 271: 219780 + 814 = 220594
Step 272: 220594 + 814 = 221408
Step 273: 221408 + 814 = 222222
Step 274: 222222 + 814 = 223036
Step 275: 223036 + 814 = 223850
Step 276: 223850 + 814 = 224664
Step 277: 224664 + 814 = 225478
Step 278: 225478 + 814 = 226292
Step 279: 226292 + 814 = 227106
Step 280: 227106 + 814 = 227920
Step 281: 227920 + 814 = 228734
Step 282: 228734 + 814 = 229548
Step 283: 229548 + 814 = 230362
Step 284: 230362 + 814 = 231176
Step 285: 231176 + 814 = 231990
Step 286: 231990 + 814 = 232804
Step 287: 232804 + 814 = 233618
Step 288: 233618 + 814 = 234432
Step 289: 234432 + 814 = 235246
Step 290: 235246 + 814 = 236060
Step 291: 236060 + 814 = 236874
Step 292: 236874 + 814 = 237688
Step 293: 237688 + 814 = 238502
Step 294: 238502 + 814 = 239316
Step 295: 239316 + 814 = 240130
Step 296: 240130 + 814 = 240944
Step 297: 240944 + 814 = 241758
Step 298: 241758 + 814 = 242572
Step 299: 242572 + 814 = 243386
Step 300: 243386 + 814 = 244200
Step 301: 244200 + 814 = 245014
Step 302: 245014 + 814 = 245828
Step 303: 245828 + 814 = 246642
Step 304: 246642 + 814 = 247456
Step 305: 247456 + 814 = 248270
Step 306: 248270 + 814 = 249084
Step 307: 249084 + 814 = 249898
Step 308: 249898 + 814 = 250712
Step 309: 250712 + 814 = 251526
Step 310: 251526 + 814 = 252340
Step 311: 252340 + 814 = 253154
Step 312: 253154 + 814 = 253968
Step 313: 253968 + 814 = 254782
Step 314: 254782 + 814 = 255596
Step 315: 255596 + 814 = 256410
Step 316: 256410 + 814 = 257224
Step 317: 257224 + 814 = 258038
Step 318: 258038 + 814 = 258852
Step 319: 258852 + 814 = 259666
Step 320: 259666 + 814 = 260480
Step 321: 260480 + 814 = 261294
Step 322: 261294 + 814 = 262108
Step 323: 262108 + 814 = 262922
Step 324: 262922 + 814 = 263736
Step 325: 263736 + 814 = 264550
Step 326: 264550 + 814 = 265364
Step 327: 265364 + 814 = 266178
Step 328: 266178 + 814 = 266992
Step 329: 266992 + 814 = 267806
Step 330: 267806 + 814 = 268620
Step 331: 268620 + 814 = 269434
Step 332: 269434 + 814 = 270248
Step 333: 270248 + 814 = 271062
Step 334: 271062 + 814 = 271876
Step 335: 271876 + 814 = 272690
Step 336: 272690 + 814 = 273504
Step 337: 273504 + 814 = 274318
Step 338: 274318 + 814 = 275132
Step 339: 275132 + 814 = 275946
Step 340: 275946 + 814 = 276760
Step 341: 276760 + 814 = 277574
Step 342: 277574 + 814 = 278388
Step 343: 278388 + 814 = 279202
Step 344: 279202 + 814 = 280016
Step 345: 280016 + 814 = 280830
Step 346: 280830 + 814 = 281644
Step 347: 281644 + 814 = 282458
Step 348: 282458 + 814 = 283272
Step 349: 283272 + 814 = 284086
Step 350: 284086 + 814 = 284900
Step 351: 284900 + 814 = 285714
Step 352: 285714 + 814 = 286528
Step 353: 286528 + 814 = 287342
Step 354: 287342 + 814 = 288156
Step 355: 288156 + 814 = 288970
Step 356: 288970 + 814 = 289784
Step 357: 289784 + 814 = 290598
Step 358: 290598 + 814 = 291412
Step 359: 291412 + 814 = 292226
Step 360: 292226 + 814 = 293040
Step 361: 293040 + 814 = 293854
Step 362: 293854 + 814 = 294668
Step 363: 294668 + 814 = 295482
Step 364: 295482 + 814 = 296296
Step 365: 296296 + 814 = 297110
Step 366: 297110 + 814 = 297924
Step 367: 297924 + 814 = 298738
Step 368: 298738 + 814 = 299552
Step 369: 299552 + 814 = 300366
Step 370: 300366 + 814 = 301180
Step 371: 301180 + 814 = 301994
Step 372: 301994 + 814 = 302808
Step 373: 302808 + 814 = 303622
Step 374: 303622 + 814 = 304436
Step 375: 304436 + 814 = 305250
Step 376: 305250 + 814 = 306064
Step 377: 306064 + 814 = 306878
Step 378: 306878 + 814 = 307692
Step 379: 307692 + 814 = 308506
Step 380: 308506 + 814 = 309320
Step 381: 309320 + 814 = 310134
Step 382: 310134 + 814 = 310948
Step 383: 310948 + 814 = 311762
Step 384: 311762 + 814 = 312576
Step 385: 312576 + 814 = 313390
Step 386: 313390 + 814 = 314204
Step 387: 314204 + 814 = 315018
Step 388: 315018 + 814 = 315832

So, 814*388 = 315832